Base | Representation |
---|---|
bin | 101001111110100110… |
… | …1010111111011100100 |
3 | 22121200112101211212212 |
4 | 1103331031113323210 |
5 | 2434110224044320 |
6 | 105225125302552 |
7 | 6340640000102 |
oct | 1237515277344 |
9 | 277615354785 |
10 | 90147487460 |
11 | 3525a9a7658 |
12 | 1557a264a58 |
13 | 8668551674 |
14 | 4512730c72 |
15 | 25292b19c5 |
hex | 14fd357ee4 |
90147487460 has 96 divisors (see below), whose sum is σ = 206731284480. Its totient is φ = 32881379328.
The previous prime is 90147487453. The next prime is 90147487489. The reversal of 90147487460 is 6478474109.
It is a junction number, because it is equal to n+sod(n) for n = 90147487399 and 90147487408.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2991629 + ... + 3021611.
It is an arithmetic number, because the mean of its divisors is an integer number (2153450880).
Almost surely, 290147487460 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 90147487460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103365642240).
90147487460 is an abundant number, since it is smaller than the sum of its proper divisors (116583797020).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
90147487460 is a wasteful number, since it uses less digits than its factorization.
90147487460 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30285 (or 30283 counting only the distinct ones).
The product of its (nonzero) digits is 1354752, while the sum is 50.
The spelling of 90147487460 in words is "ninety billion, one hundred forty-seven million, four hundred eighty-seven thousand, four hundred sixty".
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